[U-Boot] [linux-sunxi] [PATCH 0/9] sunxi: enable DM_MMC

[Priit Laes]

On Mon, Jan 21, 2019 at 08:51:10AM +0000, Andre Przywara wrote:
> Hi,
> 
> ....
> 
> >>> Testing with A10 Gemei G9 Tablet, FEL mode is broken:
> >>>
> >>> a) With usb-boot via fel:
> >>>
> >>> I get following error/warning: 
> >>> Loading Environment from FAT... Card did not respond to voltage select!
> >>>
> >>> => mmc list
> >>> mmc at 1c0f000: 0
> >>> ### All commands below stalls for a bit (~2 seconds), but return nothing
> >>> => mmc info  
> >>> => mmc dev 0
> >>> => mmc part
> >>>
> > Similar issue with A20 Olinuxino Lime2 revk with SPI.
> > 
> > a) Fel mode usb-boot failure (cannot properly initialize sd / emmc)
> > b) SPI boot failure (cannot properly initialize sd / emmc)
> > 
> > c) Regular SD-card boot works ok!
> > d) eMMC boot works ok!
> 
> Can you please try whether the patch below fixes this? At least it worked
> for me with FEL booting my Pine64-LTS.
> 
> Not totally happy with it, but it seems like we do a similar trick for
> I2C anyway, so ...

Yes, it fixes it.

Tested on A20-Olinuxino-Lime2-emmc.

PS. Comment regarding i2c looks a bit odd..

> 
> Cheers,
> Andre
> 
> ---
>  board/sunxi/board.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/board/sunxi/board.c b/board/sunxi/board.c
> index ad14837291..e330367d1d 100644
> --- a/board/sunxi/board.c
> +++ b/board/sunxi/board.c
> @@ -208,6 +208,10 @@ enum env_location env_get_location(enum env_operation op, int prio)
>  }
>  #endif
>  
> +#ifdef CONFIG_DM_MMC
> +static void mmc_pinmux_setup(int sdc);
> +#endif
> +
>  /* add board specific code here */
>  int board_init(void)
>  {
> @@ -269,6 +273,17 @@ int board_init(void)
>  	i2c_init_board();
>  #endif
>  
> +#ifdef CONFIG_DM_MMC
> +	/*
> +	 * Temporary workaround for enabling I2C clocks until proper sunxi DM
> +	 * clk, reset and pinctrl drivers land.
> +	 */
> +	mmc_pinmux_setup(CONFIG_MMC_SUNXI_SLOT);
> +#if CONFIG_MMC_SUNXI_SLOT_EXTRA != -1
> +	mmc_pinmux_setup(CONFIG_MMC_SUNXI_SLOT_EXTRA);
> +#endif
> +#endif	/* CONFIG_DM_MMC */
> +
>  	/* Uses dm gpio code so do this here and not in i2c_init_board() */
>  	return soft_i2c_board_init();
>  }
> -- 
> 2.14.5
> 
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